The cookie notice covers the logo on first visit
Phone number is an image, swap it to text with CSS styling, when a visitor comes through mobile they can easily call you.
The squirrel / mice / rat section looks ok but should maybe be buttons to follow through to new pages?

The only other visual improvements, swap h1/h2 for a google font, give a much more modern look, types of pests pages are all empty too?

At first glance it looks solid. Possible areas for improvement:
- As mentioned above add a text based phone number so mobile users can dial you straight away
- The site is not responsive so will look bad on most mobiles which could lead to less dial-thrus
- The Google map plugin at the bottom seems redundant as most people would know where the UK is
- The subpages are not populated and this is over a month after you posting the link